The search for cheap, renewable energy sources to replace fossil fuels has identified hydrogen gas (H_2) as the most promising, particularly for transportation. However, despite intense research efforts to find reliable storage materials, current practical technologies store only 1.3 wt % H_2 at 270 K, far short of the U.S. DOE targets. We report that hexagonal ice, the ordinary form of ice in snow, may be an efficient hydrogen storage material, achieving 3.8 wt % H_2 storage and 42 g L^(–1) at 150K and that after loading at 150 K, the 3.8 wt % H_2 can be kept at 270 K and then released upon heating by a few degrees Kelvin. This leads us to propose the ice-fixed melt-triggered (IFMT) strategy for hydrogen storage and utilization with ice as the median.
展开▼
机译：寻找廉价，可再生能源替代化石燃料的方法已确定氢气（H_2）是最有前途的，尤其是在运输方面。然而，尽管人们为寻找可靠的存储材料付出了巨大的努力，但当前的实用技术在270 K下仅存储1.3 wt％的H_2，远低于美国DOE的目标。我们报告说，六角形冰（雪中冰的普通形式）可能是一种有效的储氢材料，在150K时实现3.8 wt％的H_2储存和42 g L ^（– 1），而在150 K时达到3.8 wt％可以将％H_2保持在270 K，然后加热几度开尔文释放。这使我们提出了以冰为中值的储冰和利用氢的固定冰激熔触发（IFMT）策略。
展开▼
